Impact-fuse.



. K. WIESER a w. SCHWARTZ.

IMPACT PUSH. APPLICATION FILED JULYEB, 1909.

988,610. 1 Patented Apr. 4,1911.

Hg 1 z KARL WIESEB AND WILHELM SCHWARTZ.

FRIED. KRUPP AKTIENGESELLSCHAFT,

OF BREDENEY, GERMANY, ASSIGNORS T0 OF ESSEN-ON-THE-RUHR, GERMANY.

IMPACT-FUSE.

Specification of Letters Patent.

Patented Apr. 4,191.1.

Application filed July 28, 1909. Serial No. 510,102.

To all wig/012i it may concern: I

Be 1t known that we, KARI. WIESER, re

siding at Florastrasse 4, and Win-Inner SCHWARTZ, residing at Bergstrasse 20, Brcdeney, Ger1nany, both subjects of the Emperorjof Germany, have invented a certain new hnd useful Improvement in Fuses tion.--:.

The present invention relates to impact fuses; and the object of the invention is to provide an impact fuse which is so sensitive that it enters into action even when the rojectile, which is provided with the fuse, hits the bag of a. balloon;

In thencoompanying drawings, Figure l.

is an axial longitudinal section of one em- Fig. 2- is a top view of Fig. 1; Fig. 3 is a sectionon line 3-.3, Fig. '1, looking from above; Fig. 45 an axiallongitudinal section of a top view of Fig. 4.

.baseplug Gr, contaii'iing the pellet g is screwed into the fuse-body A. The hollow of two retaining levers member H, being under inthicnce of the spring IF, is slida-ble'and loosely mounted in the fuse-body and carries an ignitiownecdle 7L1. This spring tends to displace the hollow meniber. H in such annahner that-tho needle 72, ignites the pellctfg' The hollow member H- is, held in \the' transport-position shown. in the drawing through the medium J which are symmetrically arrange "relativeto the longitw dinal aicis of the on bolts i which exten longitudinal axis of the I hold the member H in the transport position; by means of noses 2' which engage beneath a collar k The upper ends of the retaining levers J fuse. The levers I are provided with noses 1 which lie against which 15 shdably' This shank a collar/b on ashank K arranged in the fuse-head A carries on its end, projecting outside of the fuse-head, a crossshaped head 2 and rests, during the transport condition of the fuse, with a shoulder which is Withdrawn by the action of the centrifugal force on the firing of the gun. This safety device (Fig. 3) consists of several plate-shaped arresting or re toning pieces Impact- .of which the following is a specificasecondembodiment of the invent1on; and 5 IS a collar is fu'se and which can swing l ra.Ir siwznsely to the movemut of on the hollow membeix,

is? against a safety device,

F, pivotally mounted and being of such a shape that each arresting piece in s'win ing out of the safety position, is still ab e to hold an adjacent arresting piece for a while in the safety position (see Patent N 0. 932,173). One of the arresting pieces F, which is intended to leave its safety osition first, is secured therein by a bolt 1 (Fig. 3), which is moved away in firin by the inertia, thereby liberating the sai arrestingpiece. The shank K is preferably made from Wood or it may be formed by a hollow body of other light material so that it has only small inertia. The weight'of the retaining levers J is distributed in such a manner. relative to the axis of oscillation of the le-' vers that the center of gravity of the lovers is located between t'he'r axis-of oscillation and their nose 2' 1 After the firing, the safety device F is automatically released and the shank K is then held in its resting position by means of the friction a.lone,'between the and the noses 6 which work like jaws of a vise. This friction is sufficient to balance the resistance presented by the air to the head is of the'shank K during the flight of the projectile, as the friction is relatively great, because the centrifugal force created during the flight of the projectile presses the noses 2' against the collar k of the shank K due to the above mentioned distribution of the Weight of the locking levers J. If, the head 6 of the shank K hits-the bag of a balloon the shank K moves axially to such an extent that thecollar k releases the noses i of the retaining levers J. Under the action of the cei'ltrifugal force, the lower ends of the retaining levers J then swing away from each other to such an extent that the noses i? engagement with theco-llar 7L ofitll e hollbw member H. The result is that thespring If comes into action and moves the hollow member H rearwai-dly so that the pellet is ignited. by the needle h In the embodiment shown in Figs. 4 and 5, the pellet m is arranged in ahollow mom ber .M which is loosely slidable but-nonrotatably arrangedin a sleeve A screwed into the fuse-body A, the member M being under the action of a spring of. This spring tends to move the pellet m towar the needle 1.2 but this movement of the pellet m on themember M is prevented by a. safetydevic when the fuse is in the transportcondition. The safety-device mainly the spring m on consists of a ring I arranged on the member M and two retaining pieces Q which are swingingly mounted on bolts q in a recess 1" provided in a mol'nhcr R which closesithc sleeve A toward the fuse-head. The retaining pieces (,1 are nfovided with noses g which engage over lugs 7.1" (it the ring P; and with other noses q, in the mannor of the jaws of a vise, the retaining pieces Q rest against a bolt N carrying the ignition-needle n This bolt isof greater diameter than the ignition-needle, and. is permanently prevented from moving toward the pellet m by means of a collar n". Over the collar a engages a safety-device F, which corresponds to the safety device for the needlobolt, described in connoctiol'i with Figs. 1 and 3, and which can have one of its retaining pieces held in the safety position by means of a bolt in the manner described in connection with Fig. 4. The upper end of the bolt N has a. further collar :1 below which engage noses s? of two levers S which are arranged diametrically opposite one another and which can swing in a recess of the fuse-body about the bolts 8, which extend transversely to the longitudinal axis of the fuse. The free ends of tho levers S carry a ring T (see also Fig. 5) which is of greater diameter than the fuse and which has its front edge formed as a. saw. A spring- Uywhich tends to hold the bolt N in the position in which the collar n on the bolt lies against. the member R, is arranged between the collar n on the bolt l? and a lug a -which is 'screwed into the fuse head. After the shot is fired the safety-device l3 is automatically released. It the projectile which is provided with the fuse, hits the bag of a balloon the bag is torn to pieces by the toothed edge of the ring T, and the resistance thus created causes the outer ends of the levers S to swing rearwardly and through the medium of the collar 11? the noses a of the lovers S carry the bolt N along against the action of the spring U to such an extent that the needlc'n, becon'ies located opposite the noses g of the retaining iece Q which formerly were lying against thebclt N. As the needle a is of smaller diameter than the bolt N, the retaining pieces Q are not any longer held against turning and the ring 1? is therefore not held against axial movement. The result is that tors into action and moves the hollow member M with the pallet m against the-needle n 5 V Having thus described the invention, what is claimed and desired to be secured by Letters Patent, is j 1. An impact fuse coi'nprising a fuse-body, a pellet in side of the fuse-body and movable to cause ignition of the pellet, a braking means for holding said movable part against movesaid body, a part projecting out ment with a Force only slightly in excess of the air pressure a-1 *.ting upon said part during the light oi the projectile and a safety device preventing moven'mnt of said part by the action of the inertia on firing, said device being adapted to be automatically released after firing.

9. A n. impact fuse comprising a fuse-body, a pellet in said body, a. pa rt projecting outside of the fuse-body and movable to cause ignition of the pellet, a braking means for l'tolding said movable part agaii'isl; movement with a force only slightly in excess of the the flight of the projectile, and a safety derice preventing moven'iei'il, of said part by the action of the inertia on firing. said "device being adapted to be automatically released after firing and l mo able part being cross shaped on pro' rating end for reducing ictrating ei icct About increasmg 2111' lE. stance.

8. An impact fuse ctmiprising a fuse-body, a pellet in said bod y, a part projecting outside of the tusediody 2 n'iovahle to cause ignition oil the pellet, a tn-ailing means for holding said movable part ainst 1nove mont Wliul a force only slightly in excess of the air pressure acting upon said part during the flight of the projectile, and a safety device preventing movement of said art by the action of the inertia on firing, sai device being adapted to be automatically.released after firing and said movable parthavingrelatively small specific gravity, whereby its inertia developed in flight may be overcome by contact with a slightly resisting body. a 4. An impact fuse comprising a fuse-body, a pellet in said body, a part projecting outside of the fuse-body and movable to cause' ignition of the pellet, said part being so readilymovable that the force required for moving the partis only slightly in excess of the resistance opposed to the part by the air during the flight ofthe projectile, and a safety-device preventing movement of said part by the action of the inertia on firin said device being adapted to he automatical y released when the projectile commences its flight, the projecting end of said movable part being formed as a serrated ring.

5 An impact fuse comprising a fuse-body, a pellet in said. body, a part projecting out- -idc of the fuse-body and movable to cause ignition of the pellet, said part being so readily movable that the force require for the resistance opposed to the part by the airduring the flight of the projectile, a-nd a safety-device preventing movement of said part by the action of the inertia on firing, said device, being adapted to be automalucally released when the projectile commences its flight, and a braking means adapted to moving the part is only slightly in excess of be held in effective osition by centrifugal force during the flig htof the projectile to prevent said movable part from being moved by the resistance of the air.

6. An im act fuse comprising a part movable to ignite the fuse, a spring tending to effect the movement of said part, -me'ans whereby. said movable part is held from movement against the action of the spring, a member projecting outside of the fusebody and movable to cause said means being re1eased,'a braking means for holding said movable member against movement with a force only slightly 1n excess of the air pressure acting upon said member during the flight of the projectile, said braking means being held in effective position by the action of said spring, and a safetydcrice preventing movement of said member by the action of inertia on firing, said device being adapted to be automatically released after firing.

An impact fuse coi'nprisinga fuse-body, a part movable to ignite the fuse. a spring lending to eflect the movement of said part, a readily movable member projecting outside of the fuse-body and adapted to be moved by a force but slightly in excess of the resistance oflered to said member by the air during the flight of the projectile, a safety-device preventing movement of said member by the action of the ineriia on firing, said device being adapted to be automatically released when the projectile com- 'mences its flight, andmeans whereby the movable part is held from movement against" the action of the spring, said means being adapted to be released when said member moves upon encountering a resistance greater than the resistance of the air.

' 8. An impact fuse comprising a fuse-body, apart movable to ignite the fuse, a spring tending to efi'ect the movement of said part, a readily movable member projecting outside of the fuse-body and adapted to be moved by a force but slightly in excess of-the' resistance offered to said member by the air during the flight of the projectile, a safetydevice preventin movement of said member by the action 0 the inertia on firing, said device being adapted to be automatically released when the p; ojectile commences its flight, and means whereby the movable part is held from movement against the action of the spring, said means being adapted to be released when said member moves upon encountering a resistance greater than the resistance of the air, said means acting as a brake on said member to prevent the memher being moved'by the resistance of the air.

9. An impact fuse comprisinga fuse-body, a part movable to ignite the fuse, a spring tending to effect the movement of said part, a. readily movable member projecting outside of the fusebody and adapted to be moved by a forcebut slightly in excess of the resistance offered to said member by the air during the flight of the projectile, a safety-device preventing movement of said memberby the action of the inertia on firing. said device being adapted to be automatically released when the projectile commences its flight, and means whereby said part is held from movement against the action of the spring, said means being adapted to be released when said member moves upon encountering a resistance greater than the resistance of the air, said meanscomprising pivoted levers having one end engaging said part and having their other end held by centritugal force in frictional connection with said member during the flight of the projec-.

tile to prevent the member being moved by the resistance of the air.

The foregoing specification si ned at Barmen, Germanyythis 26th day of June, 1909.

KARL l/VIESER. [n s.] \VILHELM SCHWARTZ' [n s.] in presence of O'r'ro KoNIG, VILL'X KLEIN. 

